Driving intention estimation system, driver assisting system, and vehicle with the system

a technology of driving intention and estimation system, which is applied in the direction of brake system, pedestrian/occupant safety arrangement, instruments, etc., can solve the problems of unreliable, inaccurate information regarding lane marks, and inability to address the situation of lost accurate information or unreliable, and the need remains for reliable and uninterrupted estimation of driving intentions

Active Publication Date: 2010-10-05
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system provides stable and accurate driving intention estimation by considering various environmental conditions, reducing errors in lane-change intention detection and maintaining reliability across different driving scenarios.

Problems solved by technology

This approach, however, does not address a situation where accurate information regarding the lane marks is lost or unreliable due to variations of the running environment.
Therefore, there is a need remains for a reliable and uninterrupted estimation of driving intention even when a vehicle operates in a constantly changing environment.

Method used

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  • Driving intention estimation system, driver assisting system, and vehicle with the system
  • Driving intention estimation system, driver assisting system, and vehicle with the system
  • Driving intention estimation system, driver assisting system, and vehicle with the system

Examples

Experimental program
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first exemplary embodiment

[0043]FIG. 1 is a block diagram illustrating an exemplary driving intention estimating system 1 according to the present disclosure. The driving intention estimating system 1 is provided with a vehicle's surrounding detector 10 configured to detect vehicle's surround of an own vehicle; a vehicle's status detector 20 configured to detect the vehicle's status; a real driver's operation detector 30 configured to detect an operation of a real driver of the own vehicle; a first imaginary driver's operation calculator 40; a second imaginary driver's operation calculator 50; a selector 60; a likelihood calculator 70; and a driver's driving intention estimator 80.

[0044]The system 1 has access to reference data, such as data related to a plurality of imaginary drivers. Same or different numbers or types of imaginary drivers may be used depending on the purpose of application or availability of data. Each of the plurality of imaginary drivers has or is given a driving intention, and each imag...

second exemplary embodiment

[0112]The constituent of the second exemplary embodiment is substantially the same as that of the first exemplary embodiment shown in FIG. 1. The following descriptions address differences between the second exemplary embodiment and the first exemplary embodiment.

[0113]In the second exemplary embodiment, when lane marker is not detected by a front camera, an in-lane lateral position x of an own vehicle is calculated based on a lateral distance xv of a middle point between lateral ends of the front of the own vehicle from a middle point between lateral ends of the rear of the preceding vehicle.

[0114]The operation of the second exemplary embodiment is described in detail using FIG. 8. FIG. 8 is a flow chart illustrating process steps of a driving intention estimating program in the driving intention estimating system. Execution of this program is repeated at a regular interval of 50 milliseconds.

[0115]The flow chart illustrated in FIG. 8 has steps S201, S202 and S203, which correspond...

third exemplary embodiment

[0128]The constituent of the third exemplary embodiment is substantially the same as that of the first exemplary embodiment shown in FIG. 1. The following descriptions mainly address differences of the third exemplary embodiment from the first exemplary embodiment.

[0129]In the third exemplary embodiment, when lane marker is not detected by a front camera, an in-lane lateral position x of an own vehicle is calculated based on a value x0 of the in-lane lateral position x when the lane marker has been lost and the lateral movement of the own vehicle.

[0130]The operation of the third exemplary embodiment is described in detail using FIG. 11. FIG. 11 is a flow chart illustrating process steps of a driving intention estimating program in the driving intention estimating system. Execution of this program is repeated at a regular interval of 50 milliseconds. The flow chart illustrated in FIG. 11 has steps S301, S302 and S303, which correspond exactly to the steps S101, S102 and S103 of the f...

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Abstract

A driving intention estimation, driver assistance and vehicle with the driver assistance for providing a stable estimation of a driver's driving intention even if detection of a relationship between an own vehicle and lane markers is lost. A plurality of imaginary drivers of a first type and a second type, each being given a respective driving intention, are provided. When detection of lane markers is reliably kept, a driving intention by a real driver is estimated based on a comparison between an operation of the real driver to operations of the imaginary drivers of the first type that are calculated based on the relative positional relationship of the own vehicle to the detected lane marker. When the detection of lane markers is lost, operations of the plurality of imaginary drivers are calculated based on the relative positional relationship of the own vehicle to a preceding vehicle. In response to the status of detection of the lane marker, either the imaginary drivers of the first type or the second type are selected.

Description

RELATED APPLICATION[0001]This application claims the benefit of priority from Japanese patent application No. 2004-341717, filed Nov. 26, 2004, the disclosure of which is incorporated herein by reference in its entirety.FIELD OF THE DISCLOSURE[0002]This application generally relates to a driving intention estimating system and its application, and more specifically, to a driving intention estimating system that provides a stable estimation of a driver's driving intention even when detection of a relationship between an own vehicle and lane markers is lost.BACKGROUND OF THE DISCLOSURE[0003]JP2002-331850A describes a driving intention estimator, by which directions that the driver's eyes turn to are projected onto a plane divided into a number of regions, for calculating a distribution of projected eye directions over the divided regions to estimate the driver's driving intention.[0004]Estimating driver's driving intention using eye directions and the frequency distribution thereof ar...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): G06F17/10G06G7/78G06G1/16G06G7/48G08G1/00G06G7/70G06G7/76G06F19/00B60K26/04B60R1/00B60R21/00B60W30/00B60W40/08B60W50/14B60W50/16H04N7/18
CPCB60K31/0008B60T8/1755B62D6/007B62D15/029B60T2201/08B60T2201/081B60T2201/086B60T2201/089B60T2220/02B60T2260/02B60W2550/306B60W2554/4041
InventorKUGE, NOBUYUKIKIMURA, TAKESHI
OwnerNISSAN MOTOR CO LTD